Gearing for feed mechanisms.



E. T. POLLARD.

GEARING FOR FEED MECHANISMS.

APPLICATION FILED SEPT-23. 1913.

WHMeoMA COLUMBIA PLANOGRAPH cu. WASHINGTON c,

Patented July 20, 1915.

2 SHEETS-SHEET I.

lwuwtov E TPollald E. T. POLLARD.

GEARING FOR FEED MECHANISMS.

APPLICATION FILED SEPT-23.1913.

Patented July 20, 1915.

2 SHEETS-SHEET 2.

wu cwto'o E TPolZaJ 'ci To all whom it may concern UNITED s'rA'r s PATENT OFFICE. j

EDSON '1'. POLLARD, F NIAGARA FALLS, NEW YORK.

GEARING FOR FEED I MECHANISMS.

Be it known that I, EDSON T. PoLLAnn, a citizen of the United States, residing at Niagara Falls, in the county of Niagara and State of New York, have invented certain new and useful Improvements in Gearing for Feed'Mechanisms, of which the following is a specification, reference being had therein to theaccompanying drawing. v

This invention rclatesto certain new and useful improvements in gearing for feed mechanisms especially adapted to. be used in connection with stone sawing machines, the object being to provide a driving mechanism by means of which the feed shafticanv be driven at different rat'esof speed in its [forward and reverse movements in order to obtain a qulck return or a quick feed upto 1 platen over which s arranged a cross rail 2 the material being sawed by the machine.

A further object of the invention is to provide a stone sawing machine in which the driving mechanism for the feed screw of the carborundum cutting wheel is mounted in such a position thatthe same can be readily reached by the operator of the ma chine, and said mechanism is inclosed in order to protect the same from dust; the.

change-speed gears and driving gears'being lubricated by ing 'mounted'to rotate inlubricant.

Another object of theinvention is to pro-,

. vide a driving mechanism which is so constructed that the same can be readily driven in either direction through'the medium of belts controlled by belt shiftersinorder to.

cause the feed screw to rotate in-afre verse direction at any speed desired, through the medium of cooperating speed-changing gears. g

A still further object of the invention is to provide novel means for locking the speed-changing gears on the counter-shaft through the medium of a sliding key cooperating with grooves formed in the hubs of the gears, whereby anyfone'of the speedchanging gears can be locked to the countershaft or any or all of the gears on the coun ter-shaft can be unlocked in order-to allow thesame torotate freely.

Other and further objectsand advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims. 1 V I In the drawings Figurel, is atop plan view of a-s tone sawing machine'showing the" a. splash system, the same beg I endless belt 8 passing over pulleys 9 and 10 I Specification of Letters Patent. Patented July 20 1915, Application filed September 23, 1913. Serial No. 791,370. r 2

carried bythe bevel gear and worm gear,

respectively; and/Fig. 5, is a side elevation of .a portion of I the driving mechanism showing the position of the belt shifter and key shaft.

Like numerals of reference refer to like parts in theseveral figures of the drawings. In the drawing, 1 indicates a stationary mounted, upon suitable supports 3 at each end and upon which,.the carriage lis slidably mounted carrying a cutting head 5 slidably mounted invertical guide-ways and adjusted vertically by a handwheel 6 mounted upon a screw, not shown, in order that the carborundum cutting wheel 7 carried bythe head can be adjusted vertically in respect to the platen.

The carborundum wheel is driven byan carried by shafts 11 and 12 mounted in suitable bearings at each end of the cross rail 2; the shaft 11 being an idleshaft and the shaft 12 a driving shaft whichis-provided with tightand' loosepulleys l3 and 1% ever which the power belt 15 passes for driving the same.

Mounted on one of the base supports 3 herein shown the one adjacent the driving shaft,is a housing 16 provided with spaced bearings 17 and 18 arranged in different horizontal planes as clearly shown; the

I bearings 17 having a driven shaft 19 mounted therein which extends over the reduced portion of the housing at one end and is supported by an additional bearing 20. The

extension of the shaft is provided with spaced loose pulleys 21 and 2 2 separated by,

a tight pulley 23 adapted to receive, either of the belts 24: .or 25 which are driven by a driving pulley 2 6 mountedupon the' driving shaft 12; the belt 24: being the forward driving means and the belt 25being twisted to form a. reverse in order that the driven shaft l9 can be driven'in either direction 110 through the medium of either one of these belts by shifting the belts from the respective loose pulleys to the tight pulley.

In order to provide means for shifting the reverse belt, I provide a belt shifter 27 mounted in suitable bearings 28 arranged on supports 29 and 30 carried by the housing and extension thereof; said belt shifter being provided with shifting fingers 31 and a stop collar 32; the outer end of the belt shifter being provided with a suitable handle for manipulating the same. "The direct or forward drive belt 24 is shifted through the medium of a belt shifter 33 slidably mounted in a bore 34 formed in the housing and is provided with spaced shifting fingers 35, the outer ends of which are likewise provided with a handle for manipulating the same and it will be seen that by adjusting the belts upon the pulleys carried by the driven shaft, the same can be driven in either direction, as by throwing the direct driving belt onto the tight pulley, the shaft will be driven in one direction and by shifting the reverse belt to the tight pulley, the shaft will be driven in a reverse direction.

i he driven shaft 19 is provided with a series of different-sized gears 36 which cooperate with a plurality of different-sized gears 37 loosely mounted on a tubular counter-shaft 38 mounted in the bearings 18 of the housing. The tubular counter-shaft is provided with a longitudinal slot 39 into which extends a pivoted key 40 mounted in a recess 4:1 of a key-shaft 42 arranged within the tubular counter-shaft and said key is held in extended position by coil-springs 43 as clearly shown in Fig. 3, which are adapted to force the key into longitudinal grooves l-lformed in the hubs of the speed gears 37; said gears being separated by washers or collars 4:5.

The outer end of the key-shaft is provided with a swiveled handle l6 arranged in position to be readily grasped by the operator and the outer portion of the key-shaft is provided with graduationsfl7 by means of which, the position of the key 40 can be determined, and it will be seen that by moving the key-shaft l2 within the tubular shaft, the key in its longitudinal movement within the tubular shaft will ride over the washers or collars 45 from one gear to the other so as to lock any one of the gears desired and when the key is thrown into engagement with one of these collars, it will be held in a compressed position so to be out of engagement with any of the gears so as to allow the gears to rotate freely and by shifting the same in either direction, can be thrown into any one of the grooves of the speed gears so as to lock the same to the tubular shaft, and it will be noted that the pivoted key 40 is provided with a rounded portion in order to allow the same to ride over the washers or collars when the key-shaft is moved longitudinally.

One end of the tubular shaft is formed solid and is provided with a worm 47' which meshes with a worm-wheel 48 loosely mounted upon a cross shaft 49 which'is mounted in suitable'bearings 50 and said shaft is provided with a longitudinal feather 51 upon which is slidably mounted a double'male same is locked to one or the other by the,

double clutch member.v The double clutch member is operated by a lever 54carried by the end of a shaft 55 mounted in suitable bearings 56 arranged on one side of the housing; one end of said shaft carrying a crank 57 which is connected to a pivoted lever 58 by a link 59; said lever being provided with a fork 60 embracing the grooved portion of the double clutch member so that when the lever 51 is operated so as to oscillate the shaft 55, the lever 58 will swing on its pivot 61 through the medium of the crank 57 and link 59 so as to slide the double clutch member longitudinally upon the shaft 49 into engagement with either of the clutch members of the worm gear or beveled ear. I '1 g The tubular shaft 38 is provided with a stud-shaft 62 at its end beyond the worm 47 which is mounted in a suitable bearing 63 arranged upon the housing in order to su port the same beyond the worm gear. T e shaft 49 is driven from the driven shaft 19 by a bevel gear 6& which meshes with the beveled gear 53 as clearly shown, whereby a direct drive from the driven shaft to the cross shaft can be obtained for the purpose hereinafter fully described.

The crossshaft 49 extends outwardly beyond the housing and carries a. sprocket wheel 65 over, which passes a sprocket chain 66 which, passes over a sprocket wheel 67 carried by one end of a feed shaft 68 mounted in the cross rail; and said feed shaft extends through suitable nuts carried by the carriage mounted upon the 7 cross rail in order that the same may be moved longitudinally upon the cross rail in either direction through the medium of the driving mechanism at different rates of speed in ither direction.

The housing 16 is provided with oil cups,

or basins 69and 70 in which the changespeedgearsand; bevel and worm gears rotatev i the housing without a cover, it isv of courseunderstoodthat the housing is provided-with g as follows: Supposing that the driving belts in order to keep the same thoroughly lubricated and (while in the drawingsyfl have shown the driving mechanism arranged in a cover for inclosing the same in orderto protect the driving mechanism from the dirt and'dust.

The operation of my improved driving mechanism as applied to a stone sawing machine as herein shown and described, is

speed-changing gears of thecounter-shaft,

are free to rotate upon the counter-shaft if the key is thrown out of engagement there- The clutch isthen operated so as'to shiftthe g same from the bevelgearto the worm gear with, the counter-shaft will not be rotated.

By shifting the double clutch member so as 25" to throw the same into engagement with the bevel gear carried by the cross shaft, the shaft 49 will be rotated and through'the :medium of the sprocket chains and wheels the feed shaftor screw shaft 68 will be rotated in order to advance the carborundum wheel quickly upon the cross rail in position to op'erateupon the material being sawed.

in order to lock the worm geartofthe shaft and by shifting the key-shaft42 withinlthe tubular counter-shaft in such a position as to lockany one of the different-sized gears car-Y ried thereby, the counter-shaft will be rotated through the medium of the worm and worm gear and the cross shaft 49 will be rotated so as to advance the carriage upon the cross rail at the rate of speed desired and if it is desired 'to'increase or decrease the travel of the carriageupon the cross rail, the keyshaftis operated so as to throw the same into engagement with one of the other gears. v If thebelt shiftersare operated so as to throw [the reverse belt from the loose pulley to the tight pulley, the driven shaft will be rotated in a reverse direction and the aboveopra tioncan be repeated in order to changethe position of the carriagecarrying the cutting 1 p I for independently locking the beveled gear I headon the cross rail. e p

' The bearing ofthe shaft 11 is adjustably mounted upon the cross rail'2 in order to adjust the tension of the beltby providing the I bearings with slots through which the clamping bolts extend in order to allow the same to be adjusted longitudinally thereon and,

either direction upon the cross rail at any:

1. In a machine, the

movable member, of a feed mechanism for movlng said member, a 'drivlng shaft, a

- driven shaft having a driving connection with said driving shaft, a counter-shaft, co-

combination witha operating change-speed gears carried by the I I driven and counter-shaft, a cross shaft, a

driving connection between the cross shaft and feed mechanism, and a driving connection between the driven, counter and cross shafts. F 1' I 2. In a machine, the combination with a movable member having a revoluble member,

a feed shaft for said movable member, a

driving shaft having a driving connection with said revoluble member, a driven shaft having a driving connection with said driving shaft," a counter-shaft, cotiperating speed-change 'gearscarried by the driving and countershafts, a cross shaft having a driving connection with the feed shaft, a

driving connection between said driven,

counter and cross shafts, and means forindependently locking any one of said speedcha'nging gears to the counter shaft.

' 3. In a machine, the combination with a feed shaft, a cross shaft for driving said feed shaft, a driven shaft, a counter-shaft, 00- operating speed-change gears carried bythe counter and driven shafts, drivingconnections between the cross shaft, counter-shaft and driven shaft, and means for independ-' ently locking the speed-change gears to the counter shaft.

4;. In a machine, the combination with a feed mechanism, of a cross shaft having a driving connection therewith, a double 7 clutch mounted upon said cross shaft, a worm wheel arranged upon said cross shaft,

a beveled gear mounted upon said cross shaft, a driven shaft having a beveled pinion' meshing withthe pinion of the cross shaft, a counter-shaft havlng a worm mesh:

ing with the worm wheel, cooperating gears carried by the counter and driven shafts, and means for operatingsaidcl'utch member and worm wheel to the cross shaft.

5'. In a machine, the combination with a feed-mechanism, of a cross shaft having a driving connection therewith, a driven shaft, a driving connection between the driven shaft and cross shaft, a counter-shaft, a'driving connection betweenthe countershaft and cross shaft, and cotiperating change-speed gears carried by the counter and driven shafts.

6. In a machine, thecombination with a feed shaft, a cross shaft, a driving connection between the cross shaft and feed shaft, a driven shaft, a counter-shaft, cotiperating speed-change gears carried by the driven and counter-shafts, means for independently locking the change-speed gears of the counter-shaft thereto, and driving connections between the counter-shaft and cross shaft and driven shaft.

'2'. In a machine, the combination with a feed shaft, of a cross shaft, a driving connection between the cross shaft and feed shaft, loosely mounted driving members mounted upon said cross shaft provided with clutch members, a counter-shaft, a driven shaft, cooperating driving members carried by the counter and driven shafts, cooperating gears carried by the counter and driven shafts, and means for independently locking the loosely mounted driving members of the cross shaft.

8. In a machine, the combination with a feed shaft, of a cross shaft having a driving connection therewith, change-speed mecha nism having a driving connection with the cross shaft, a driving shaft, means for driving said change-speed mechanism from said driving shaft, and means for reversing the driving means from the driving shaft.

9. In a driving mechanism, comprising a driven shaf a counter-shaft, cooperating change-speed gears carried by said shafts, means for independently lockin the changespeed gears of the counter shaIt thereto, a cross shaft, a driving connection between the cross shaft and driven shaft, a driving connection between the counter-shaft and cross shaft, and means for throwing said driving connections between the counter, driven and cross shafts into operation.

10. fr driving mechanism, comprising a driven shaft having a plurality of changespeed gears fixed thereto, a counter-shaft having a plurality of loosely mounted change-speed gears cooperating with the change-speed gears of the driven shaft, means for independently locking the changespeed gears of the counter-shaft thereto, a cross shaft, a beveled gear loosely mounted upon said cross shaft provided with a clutch member, a beveled pinion carried by the driven shaft meshing with the beveled gear of the cross shaft, a worm wheel loosely mounted upon the cross shaft provided with a clutch member, a worm carried by the counter-sha ft meshing with the worm wheel of the cross shaft, and a clutch member feathered on said cross shaft for locking either the worm wheel or beveled gear thereto.

11. A. driving mechanism, comprising a driven shaft and a counter-shaft, a cross shaft, means for driving said cross shaft from either the driven shaft or countershaft, cooperating speed-change gears car ried by the driven shaft and counter-shaft, independent means for locking said changespeed gears of the counter-shaft thereto, and means for driving said driven shaft in either direction.

12. In a machine, the combination with a movably mounted member, of driving mechanism, a feed shaft for said movable member, a cross, shaft, sprockets carried res ectively by the feed shaft and cross sha t, a chain passing over said sprockets, a driven shaft, a counter-shaft, cooperating changespeed gears carried by the driven shaft and counter-shaft, and means for driving said cross shaft from either the driven or counter-shaft.

13. A driving mechanism, comprising a driven shaft, means for; drivingsaid shaft in either direction, a counter-shaft, changespeed gears loosely mounted upon said counter-shaft, change-speed mechanism fixed upon said driven shaft, means for independently lockin the change-speed gears to the counter-shaft, a cross shaft, and means for driving said cross shaft from either the counter-shaft or driven shaft.

14. A driving mechanism, comprising a cross shaft, a driving connection between said crossshaft and machine, spaced loosely mounted driving members arranged upon said cross shaft, a feathered locking member arranged upon said cross shaft, a driven shaft having a driving member cooperating with one of said driving members, a counter-shaft having a driving member cooperating with the other of said members, and a driving connection between the countershaft and driven shaft.

15. In a driving mechanism, the combination with a feed shaft, of a cross shaft havin a driving connection therewith, a driven sha having a driving connection with the cross shaft, a countenshaft having a driving connection with the cross shaft, said countershaft being provided with a tubular portion, change-speed gears loosely mounted upon said tubular portion, cooperating changespeed gears fixed upon the driven shaft, and a key-shaft mounted in said tubular portion of the counter-shaft having a movable key 115 for independently locking the change-speed gears thereto.

16. In a machine, the combination with the feed shaft thereof, of a. cross shaft having a driving connection therewith, a driven shaft having a driving connection with the cross shaft, a counter-shaft having a driving connection with the cross'shaft, coiiperating change-speed gears carried by the countershaft and driven shaft, means for locking either the driving connection of the countershaft or driven shaft to the cross shaft, and means for driving the driven shaft in either direction.

17. In a machine, the combination with a BEST AVAILABLE movable m ember,'of a feed shaft therefor, a 7

driving shaft, a driven shaft, a driving connection between said driven shaftand driving shaft, a counter-shaft, cooperating change-speed gears carried by the'countershaft and driven shaft, a cross shaft, a dr1ving connectionbetween the cross shaft and feedshaft, a driving connection between the counter-shaft andcross shaft, and a dr ving connection between the driven shaft and cross shaft. I i g 18. A driving mechanism, com rising a driven shaft and a counter-sha t, speedchanging-gears carried by the drivenshaft,

speed-changing gearscarriedby the counter shaft, means for independentlyilocking the change-speed; gears of the counter-shaft theretofa cross shaft, and means for driving the cross shaft from eitherthe countershaft, a plurality of loosely mounted changespeed gears carried thereby, collars separat ing said change-speed gearsffrom lsaid counter-shaft, a key-shaft slidably mounted I within said tubular shaft, and a pivotedkey tion between the driving shaft and one of housing having oil cups, a counter-shaft, a

carried by said key-shaft for independently locking saidspeed-changing gears thereto.

20. A driving mechanism, COIIIPIlSlIlg. a

housing parallel shafts mounted in. said housing, .a driving shaft, a driving connecsaid first-mentioned shafts, cooperating change-speed gears carried by the parallel shafts, a cross shaft, and means for driving said cross shaft from either one of the parallel shafts. 1' .a 7

21. A driving mechanism, comprising a housing, a cross shaft mounted in said housing for driving the feed of said machine,

loosely mounted driving members mounted 1 upon said cross shaft having clutch faces, a

double clutch mounted upon said cross shaft for locking either of said loosely mounted driving members thereto, a driven shaft having a connection with one of said driving members, a counter-shaft having a connection with the other of said driving members,

cooperating change-speed gears carried by said counter-shaft and driven shaft, and means for driving the driven shaft in either direction.

22. A driving mechanism, comprising a driven shaft, cooperating change-speed gears carried by said shaft arranged within one of said oil cups, a cross. shaft, driven gears carried by the cross shaft arranged within the other of said oil cups, and cooperating driving gears carried'by the counter-shaft and driven shaft.

23. A driving mechanism, comprising a cross shaft having a driving connection with the feed screw thereof, .a driving shaft having a drivingfconnection with the; cutting member thereof, a driven shaft, means for driving said driven shaft from said driving shaft in either direction, means for driving SELIClCIO SS shaft from said driven shaft, a counter-shaft, means for driving said cross shaft from said counter-shaft, coiiperatingchange-speed gears carried by said countershaft and driven'shaft, and means for independently locking the change-speed gears of the counter-shaft thereto.

24:. In a driving mechanism, the combination with a driven shaft, of a counter-shaft, change-speed gears carried by the driven shaft, change-speed ears loosely mounted chine, a driven shaft, a driving connection between said driven shaftxand driving shaft,

a driving connection between said driven shaft and cross shaft, and means forreversing the movement of said driven shaft.

26. The combination with a mechanism having a movable member carrying a rotary member, of a driving, shaft having a driving connection withv the rotary member, a feed shaft in said movable member, a cross shaft having a driving connection with the feed shaft, a driven shaft, means for driving said driven shaft from said driving shaft in either direction, a worm wheel mounted upon said cross shaft, a beveled gear mounts ed upon said cross shaft, means for locking either said" worm wheel or beveled gear thereto, a counter shaft having acooperating member for said worm wheel, a driven shaft having a cooperating member for said beveled gear, and a driving connection between said counter-shaft. and driven shaft.

27. A driving mechanism, comprising a driven shaft, a counter-shaft, cooperating changespeed gears carried by the driven shaft and counter shaft, manually operated means for locking said change-speed gears of the counter-shaft independently thereto, a cross shaft, loosely mounted driving members. carried by the cross shaft, cooperating members earned by the counter-shaft and driven shaft, and manually operative means for locking either of the loosely mounted driving members of the cross shaft thereto.

28. A machine, a movable member, a rotary member carried by said movable mem saiddriving shaft to said rotary member, a

upon the counter-sha t, a cross shaft, means I BEST AVAILABLE cor cross shaft, a driving connection from said cross shaft to said feed shaft, loosely mounted driving members mounted upon said cross shaft, a driven shaft having a cooperating driving member meshing, with one of said driving members, a counter-shaft having a cooperating driving member meshing with the other of said driving members of the cross shaft, cooperating change-speed gears carried by said counter-shaft and driven shaft, driving belts from said driving shaft to said driven shaft, means for shifting said belts, and means for locking either of the driving members carried by the countershaft thereto.

29. A driving mechanism, comprising a driven shaft, means for driving said shaft in either direction, a cross shaft having a driving connection with the feed of the machine, a driving connection between said driven shaft and cross shaft, a counter-shaft, 'a driving connection between the countershaft and cross shaft, change-speed gears loosely mounted upon said counter-shaft, collars arranged between said change-speed gears, cooperating change-speed gears carried by the driven shaft, and a slidably mounted key for independently locking said change-speed gears to the counter-shaft.

30. A driving mechanism, comprising a driven shaft, a plurality of change-speed gears fixed upon said shaft, a tubular longitudinally slotted counter-shaft, a plurality of loosely mounted change-speed gears carried by said counter-shaft, collars arranged between said change-speed gears of the counter-shaft, a key-shaft slidably mounted within said counter-shaft, a handle swiveled on one end of said key-shaft, said key-shaft being provided With a recess, a spring-actuated key mounted within said recess of the key-shaftv for independently locking or re"- leasi the ch e-speed rs carried there b y, a cross :lifft, and m ns for driving said cross shaft from the counter-shaft or driven shaft.

31. A change-speed mechanism, for machines, comprising a cross shaft having a driving connection with the feed shaft thereof, a counter-shaft having a longitudinally slotted tubular portion, means for driving said cross shaft from either the counter-shaft or driven shaft, a plurality of change-speed gears'carried by the counter-shaft and driven shaft, and

a driven shaft,

means for driving said driven shaft in either direction.

'32. A change-speed mechanism formachines, comprising a cm shaft having a driving connection with the feed shaft therefor driving said cross ft from the counof, of a driven shaft, a finter-shaft, means I in presence 0 two witnesses.

A EDSON 'r. POLLARD. Witnesses:

Emun E. Penman, Mans F. Ponnum.

Copies 01 this patentmay be obtained for five cents each, by addressing the of Patents, Washington, D. 03"

aflix my signature slotted tubular por- I in said counter- 

